Home / Standards / GB/T 18000-1999 GB/T 18000-1999 Active Illustrative plats of defects in wood 木材缺陷图谱 Standard Type GBT ICS 79.040 CCS B69 Status 现行 Issue Date 1999-11-10 Implementation 2000-04-01 Responsible Dept 国家林草局 Drafting Unit N/A